1967 273 Commando Connecting Rods

I'd say save your money and put it into something that will make you competitive. I autocrossed for 20 years. Depending on the course and the gearing in the car you'll only see a bit south of 4800 RPM in most cases and that will be in short spurts. Nothing wrong with the 273 rods. If you want a little lighter setup run a lighter pin. There are several other 273 people on here that can you some information.